This is particularly useful if you want to be able to add a feature to a screen.
It allows for a very fast and easy way to find what screenmessage you are
looking for. Just SystemMessage it out.
This has a lot of advantages over the old ways. Some of the initial ones are that
you can log a list of all screenmessages and their respective number and another
is that it would be fairly easy to add a reverse lookup, so you could get the name
of a ScreenMessage for log use by getting the ScreenMessage number.